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authorGeert Uytterhoeven <geert+renesas@glider.be>2014-06-02 17:38:03 +0400
committerMark Brown <broonie@linaro.org>2014-06-02 18:49:32 +0400
commit5f684c34fc82be84ece158aa5c5c7c5072daa9a0 (patch)
treef8e211cd6651b941517fc450750800fd09ff7aa3 /drivers/spi/spi-rspi.c
parent3beb61dbfcf188399cbc36ce1eeb8b2ba724de38 (diff)
downloadlinux-5f684c34fc82be84ece158aa5c5c7c5072daa9a0.tar.xz
spi: rspi: Extract rspi_wait_for_{tx_empty,rx_full}()
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Mark Brown <broonie@linaro.org>
Diffstat (limited to 'drivers/spi/spi-rspi.c')
-rw-r--r--drivers/spi/spi-rspi.c29
1 files changed, 21 insertions, 8 deletions
diff --git a/drivers/spi/spi-rspi.c b/drivers/spi/spi-rspi.c
index 5639f9529e0b..d04a4acce231 100644
--- a/drivers/spi/spi-rspi.c
+++ b/drivers/spi/spi-rspi.c
@@ -405,11 +405,22 @@ static int rspi_wait_for_interrupt(struct rspi_data *rspi, u8 wait_mask,
return 0;
}
+static inline int rspi_wait_for_tx_empty(struct rspi_data *rspi)
+{
+ return rspi_wait_for_interrupt(rspi, SPSR_SPTEF, SPCR_SPTIE);
+}
+
+static inline int rspi_wait_for_rx_full(struct rspi_data *rspi)
+{
+ return rspi_wait_for_interrupt(rspi, SPSR_SPRF, SPCR_SPRIE);
+}
+
static int rspi_data_out(struct rspi_data *rspi, u8 data)
{
- if (rspi_wait_for_interrupt(rspi, SPSR_SPTEF, SPCR_SPTIE) < 0) {
+ int error = rspi_wait_for_tx_empty(rspi);
+ if (error < 0) {
dev_err(&rspi->master->dev, "transmit timeout\n");
- return -ETIMEDOUT;
+ return error;
}
rspi_write_data(rspi, data);
return 0;
@@ -417,11 +428,13 @@ static int rspi_data_out(struct rspi_data *rspi, u8 data)
static int rspi_data_in(struct rspi_data *rspi)
{
+ int error;
u8 data;
- if (rspi_wait_for_interrupt(rspi, SPSR_SPRF, SPCR_SPRIE) < 0) {
+ error = rspi_wait_for_rx_full(rspi);
+ if (error < 0) {
dev_err(&rspi->master->dev, "receive timeout\n");
- return -ETIMEDOUT;
+ return error;
}
data = rspi_read_data(rspi);
return data;
@@ -737,7 +750,7 @@ static int rspi_transfer_out_in(struct rspi_data *rspi,
}
/* Wait for the last transmission */
- rspi_wait_for_interrupt(rspi, SPSR_SPTEF, SPCR_SPTIE);
+ rspi_wait_for_tx_empty(rspi);
return 0;
}
@@ -783,7 +796,7 @@ static int rspi_rz_transfer_out_in(struct rspi_data *rspi,
}
/* Wait for the last transmission */
- rspi_wait_for_interrupt(rspi, SPSR_SPTEF, SPCR_SPTIE);
+ rspi_wait_for_tx_empty(rspi);
return 0;
}
@@ -818,7 +831,7 @@ static int qspi_transfer_out_in(struct rspi_data *rspi,
}
/* Wait for the last transmission */
- rspi_wait_for_interrupt(rspi, SPSR_SPTEF, SPCR_SPTIE);
+ rspi_wait_for_tx_empty(rspi);
return 0;
}
@@ -836,7 +849,7 @@ static int qspi_transfer_out(struct rspi_data *rspi, struct spi_transfer *xfer)
}
/* Wait for the last transmission */
- rspi_wait_for_interrupt(rspi, SPSR_SPTEF, SPCR_SPTIE);
+ rspi_wait_for_tx_empty(rspi);
return 0;
}